Apparatus for electrical precipitation of suspended particles from gases



Get 2, 1923.

E; MLLER ET AL APPA ATUS FOR ETFCTRICAL PRECIEIIATION OF SUSPENDED PARTICLES FROM GASES Filed Jan; 15.1322

INVENTORS: "lie r L mw a v, m

ATTORNEY- Patented on, a, teas,

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EBWXN MtlLLER, 0F EGKWEDE, WILHELM H088 meant "area ASSIGNORS T0 ENTHATKUNAL PRECIPITATION GOMPANY, 6h L08 ANGEILESv, C- F0 i 1 A CORPORATION 033' GALIFQRHXA.

APPATUS FOE ELEWBKCAL PRESENTATION 0F SUSPEND ETICLES FRQEEI GihidEfi.

Application filed January 16, 31922. serial 1%. 529,882.

T 0 all whom it may concern: Be it known that we, ERWIN Momma an WILHE M Hose, citigens of German residing, respectivel at Brackwede, in est- 5 phalia, and Bad omburg, vor der Hoehe in Hessen-Nassau, Germany, have inven a new and useful lm rovement in Apparatus for Electrical 1 recipitation of Suspended Particles from Gases, oi which'the 4% following is a specification.

The main object of the present invention is to provide simple and ellective means for removing from the discharge electrodes of an electrical precipitator materiel collect- 35 ing thereon in the operation of the precipitator. Arrangements which are intended to dislodge the deposited dust from dis charge electrodes by mechanical jarring have, in many cases, failed to operate eiiectively on account of the tact that only a limited jarring action-can he produced without injury to the rigidity of the discharge electrode and the insulators carrying the same.

According to this invention, the cleaning of the discharge electrodes is ell'ected hy causing two or more contacting discharge elements wires, rods, strips, or the like, hare, or insulated) to move on one another in such manner that they mutually remove the layer of dust, or deposited materiel from each other. The movement of the electrode elements may he lengthwise of the said elements, or, in any 'ven case, the electrode elements may also adapted for rotation around their longitudinal ones, so that the entire surface oi the separate dismharge elements can he subjected to the desired cleaning action, in order to de the discharge elements in their movement on one another rin or other guiding means, may he provided that also omrate as scraping means. Furthermore, along the length of each discharge element there may n will! is b di tributed enlargements, knots, or the like, which serve to, rub ed the dust deposited in the movement of the discharge elements on one another.

The invention is applicable as well to gas purification apparatus with tuhular collecting electrodes as to those with plate collecting electrodes and can be carried out in detail in various ways.

The accompanying drawings illustrate embodiments of the invention, and referrin thereto:

- ig. l is a partly broken perspective view of a form of the invention in which the collooting electrodes consist of vertical pipes and each discharge electrode consists of two vertical wires which are rubbed on one another to dislodge deposited material therefrom;

Fig. 2 is a side elevation of a modified form of a discharge electrode such as used in th; form of the invention shown in igs. 3 and 4: are hrolren perspective views, partly in section, of modllied forms of the invention.

The form of the invention shown in Fig.

1 comprises a plurality of vertical tubular collect ng electrodes 2 connected at their upper ends to a' header portion 1 of an electrical precip-itator and at their lower ends to a header 3, suitable means being provided for conducting the gas to he treated to one of these headers and leading the gas from the other of said headers so that the gas is caused to he passed through the tubular collecting electrodes 2. Shafts l are mounted in the upper header 1, being journalled in insulators 5 and connected together loy arms on said shafts and links 23 connecting said arms. @ne of said shafts 41' is provided with an operating arm 24 outside of the header l for operation of the said shafts. Two arms 7 are mounted'on each shaft 4 above each vertical tubular collecting electrode 2, said arms extending in opposite directions and having connected, respectively, to their outer ends two discharge electrode elements 8 and 9 consisting, for example, of wires,or other flexible conductors. Before passin into the tuhular electrode 2 the wires 8 an t pass through openings 11 in an insulated frame 10 and are thereby maintained in con-v or non nonsense, enmity,

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tact with each other. lln the lowerheader 3 is provided a. similar frame 12 having holes 14: through which the double wires 8 and 9 pass. The tensioning of hoth wires 8 and 9 is edected hy a weight 15 that is hung tromthe middle of at double orrned member i 16. Steys 19 hold the freme l2 sgsinst lotersl displacement.

As will nppeer from the drswing, it is only necessary to turn the shaft d from side to side by hend, or by the use of in motor, either continuolly or from time to time, to edect o rubbing of the electrode "WilIGS 8 end 9 on one onother, thereby bringing shout the cleaning thereof.

As shown in Fig. 3 either one of the discharge electrode members, for exsrnple, the member 8, rosy he provided with o ring 25 connected thereto by snitshle insnleting meme 2% end edepted to slide within the t hnler collecting electrodes 2 to guide the dischorge electrodes end also serve to serene end cleen the collecting electrodes; furthermore, the longitudinal movement of the electrode elements rney he coinhined with sxisl movement thereotw For this purpose es shown in Fig. d the Wires t3 9 they ,he .lorrned es twismd members, such es "wire cord, end the holes in the dresses lll end it through which the Wires pess they tit the twisted wires or cords so as to cause the new to turn es they ore drown through ssid holes If n B a lln the form or the invention shown in Fig. 2 the discharge electrode elements 8 end 9, consisting oi? wires, or the like, ore pro rided with enlorgenients; legs, or knots 22,

which in the movement oil the wires on one enother wipe oh the dust deposit, lln this form out the invention the reteining trenmes Jill and 12 ere omitted end instendthereof .rmgs d0 and El ore provided on the wire 9 eeesro end the wire 9 posses through seid rings. Otherwise the operetion is the some es shove described.

Whst we cloirn is:

l. An electrical precipitntor comprising collecting electrodes and dischnrge electrodes, esch dischnrge electrode comprising at plurality of electrode elements contacting with one another, end niesns for moving ssid electrode elements on one nnother to cense deposited materiel to he dislodged there from 2. An opperetns, as set forth in clnim l, in which one of seid dischorge electrode elements is provided with enlsrgernents tor robbing the cont'ncting electrode element in the relative motion of sold electrode ole rnents.

3. In on electricel precipitstor o dischsrge electrode comprising two electrode elements, eech consisting of e desilolecondnctor, guiding rnenns for holding sold electrode elemerits in contracting osition', on operating shaft, srrns connects to seid shett end extending oppositely therelnom, snid erms heing connected, respectively, to ssid electrode elements one end of so id elements, and ineens connected to the other end of ssid electrode elements to tension the some.

at, A. constinction, es set forth in clsim 3, in which sold tensioning moons comprises s nieniher herring its opposite ends connected, respectively, to sold electrode elements end Weight on mernherfl enters itonnnn. rrnnrnnn noes,

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